If genes are implicated in any given physical trait or behavior pattern, then you would expect that
A) DZ twins would be more similar on the trait than MZ twins.
B) all people in a given family would express the trait similarly.
C) cousins would be more similar on the trait than siblings.
D) siblings would be more similar on the trait than cousins.

Question

Quizplus · Accepted Answer

D) Siblings share more genetic material with each other (approximately 50%) than cousins do (approximately 25%), so if a trait or behavior pattern is influenced by genetics, siblings would be expected to be more similar to each other on that trait than cousins.

If Genes Are Implicated in Any Given Physical Trait or Behavior